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MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
General Description
The MAX4789–MAX4794 family of switches feature internal current limiting to prevent damage to host devices due
to faulty load conditions. These analog switches have a
low 0.2Ω on-resistance and operate from 2.3V to 5.5V
input voltage range. They are available with guaranteed
200mA, 250mA, and 300mA current limits, making them
ideal for SDIO and other load switching applications.
When the switch is on and a load is connected to the
port, a guaranteed blanking time of 14ms ensures that
the transient voltages settle down. If after this blanking
time the load current is greater than the current limit, the
MAX4789, MAX4791, and MAX4793 enter a latch-off
state where the switch is turned off and FLAG is issued to
the microprocessor. The switch can be turned on again by
cycling the power or the ON pin.
The MAX4790, MAX4792, and MAX4794 have an
autoretry feature where the switch turns off after the
blanking time and then continuously checks to see if the
overload condition is present. The switch remains on
after the overload condition disappears.
The MAX4789–MAX4794 are available in 6-pin 3mm x
3mm TDFN and tiny space-saving 4-pin SOT143 packages. The MAX4789/MAX4790/MAX4791/MAX4793 are
also available in a tiny 5-pin SOT23 package. For lower
current current-limiting switches, refer to the MAX4785–
MAX4788 data sheet.
Applications
●●
●●
●●
●●
●●
PDAs and Palmtop Devices
Cell Phones
GPS Systems
Handheld Devices
SDIO
19-2663; Rev 4; 5/19
Features
●● Guaranteed Current Limit: 200mA, 250mA, 300mA
●● Thermal-Shutdown Protection
●● Reverse Current Protection
●● 0.2Ω On-Resistance
●● 14ms Guaranteed Blanking Time
●● FLAG Function (MAX4789/MAX4791/MAX4793)
●● 80µA Supply Current
●● 8µA Latch-Off Current
(MAX4789/MAX4791/MAX4793)
●● 0.01µA Shutdown Current
●● 2.3V to 5.5V Supply Range
●● Undervoltage Lockout
●● Fast Current-Limit Response Time (5µs)
●● TDFN and SOT23/SOT143 Packages
Typical Operating Circuit
2.3V TO 5.5V
IN
ON
MAX4789
MAX4791
MAX4793
µP
FLAG
OUT
TO SDIO PORT
GND
Ordering Information and Selector Guide appear at end of
data sheet.
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
Absolute Maximum Ratings
IN, ON, FLAG, OUT to GND....................................-0.3V to +6V
OUT Short Circuit to GND.................................Internally Limited
Continuous Power Dissipation (TA = +70°C)
4-Pin SOT143 (derate 4.0mW/°C above +70°C).........320mW
5-Pin SOT23 (derate 7.1mW/°C above +70°C)...........571mW
6-Pin TDFN (derate 24.4mW/°C above +70°C)......1951.2mW
Operating Temperature Range............................ -40°C to +85°C
Junction Temperature.......................................................+150°C
Storage Temperature Range............................. -65°C to +150°C
Lead Temperature (soldering, 10s).................................. +300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Package Information
PACKAGE TYPE: 4 SOT143
Package Code
U4-2
Outline Number
21-0052
PACKAGE TYPE: 5 SOT23
Package Code
U5-2
Outline Number
21-0057
PACKAGE TYPE: 6 TDFN
Package Code
T633-2
Outline Number
21-0137
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
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Maxim Integrated │ 2
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
Electrical Characteristics
(VIN = 2.3V to 5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VIN = 3.3V, TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
Operating Voltage
VIN
Quiescent Current
IQ
CONDITIONS
VON = VIN, IOUT = 0, VIN = +2.3V to +5.0V
switch on
VIN = +5.0V to +5.5V
ILATCH
VON = VIN, after an overcurrent fault
(MAX4789/MAX4791/MAX4793)
Shutdown Current
ISHDN
VON = 0V
Reverse Current Limit
Shutdown Reverse Leakage
Off Switch Leakage
Undervoltage Lockout
UVLO
80
UNITS
5.5
V
120
8
0.01
15
µA
1
µA
200
300
MAX4791/MAX4792
250
375
MAX4793/MAX4794
300
450
MAX4789/MAX4790
300
MAX4791/MAX4792
375
MAX4793/MAX4794
450
-1
RON
Rising edge
1.8
0.01
ON Input Logic High Voltage
VIH
TA = +25°C, IOUT = 100mA
TA = -40°C to +85°C, IOUT = 100mA
0.2
µA
µA
1
µA
2.2
V
ISINK = 1mA (MAX4789/MAX4791/MAX4793)
FLAG Output High Leakage
Current
VIN = V FLAG = 5.5V (MAX4789/MAX4791/
MAX4793)
mV
0.4
0.5
2.0
W
V
VIL
FLAG Output Logic Low Voltage
mA
+1
100
On-Resistance
mA
100
VON = VIN or GND
VON = 0V, VOUT = 0V
µA
160
Undervoltage Lockout Hysteresis
ON Input Logic Low Voltage
MAX
MAX4789/MAX4790
VON = 0, VIN = 3V, VOUT = 5V
ON Input Leakage
TYP
2.3
Latch-Off Current (Note 2)
Forward Current Limit
MIN
0.8
V
0.4
V
1
µA
Thermal Shutdown
150
°C
Thermal-Shutdown Hysteresis
15
°C
DYNAMIC
Turn-On Time (Note 3)
VON from low to high; IOUT = 10mA,
CL = 0.1µF
100
μs
Turn-Off Time (Note 3)
VON from high to low; IOUT = 10mA,
CL = 0.1µF
40
ns
Blanking Time
tBLANK
Short-Circuit Current-Limit
Response Time
Retry Time (Note 4)
Overcurrent fault (Figures 2, 3)
14
VON = VIN = 3.3V, short circuit applied to
OUT
tRETRY
MAX4790/MAX4792/MAX4794 (Figure 2)
60
5
98
ms
μs
420
ms
Note 1: All parts are 100% tested at +25°C. Limits across the full temperature range are guaranteed by design and correlation.
Note 2: Latch-off current does not include the current flowing into FLAG.
Note 3: The on time is defined as the time taken for the current through the switch to go from 0mA to full load. The off-time is
defined as the time taken for the current through the switch to go from full load to 0mA.
Note 4: Retry time is typically 7 times the blanking time.
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Maxim Integrated │ 3
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
Typical Operating Characteristics
(VIN = 3.3V, TA = +25°C, unless otherwise noted.)
70
60
50
40
30
20
2.5
3.5
4.0
4.5
5.0
40
35
60
0.01
10
35
60
TEMPERATURE (°C)
85
VIN = 3.3V
TEMPERATURE (°C)
0.001
-15
10
35
60
85
60
85
LATCH-OFF LEAKAGE CURRENT
vs. TEMPERATURE
100
LATCH-OFF LEAKAGE CURRENT (nA)
VIN = 5V
35
0.01
TEMPERATURE (°C)
VON = VIN
10
VIN = 3.3V
0.1
0.0001
-40
LATCH-OFF CURRENT
vs. TEMPERATURE
-15
VIN = 5V
1
MAX4789 toc06
-15
10
85
MAX4789 toc05
MAX4789 toc04
VIN = 3.3V
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10
SHUTDOWN LEAKAGE CURRENT
vs. TEMPERATURE
0.1
-40
-15
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
VIN = 5V
-40
-40
TEMPERATURE (°C)
1
LATCH-OFF (µA)
VIN = 3.3V
60
SUPPLY VOLTAGE (V)
10
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
80
0
5.5
MAX4789 toc03
SHUTDOWN SUPPLY CURRENT (nA)
3.0
SHUTDOWN LEAKAGE CURRENT (nA)
2.0
100
0.001
VIN = 5V
20
10
0
VON = VIN
100
SUPPLY CURRENT (µA)
80
MAX4789 toc02
VON = VIN
90
120
MAX4789 toc01
100
SUPPLY CURRENT (µA)
SUPPLY CURRENT
vs. TEMPERATURE
QUIESCENT SUPPLY CURRENT
vs. SUPPLY VOLTAGE
10
1
VIN = 5V
0.1
VIN = 3.3V
0.01
0.001
0.0001
-40
-15
10
35
60
85
TEMPERATURE (°C)
Maxim Integrated │ 4
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
Typical Operating Characteristics (continued)
(VIN = 3.3V, TA = +25°C, unless otherwise noted.)
NORMALIZED ON-RESISTANCE
vs. TEMPERATURE
OUTPUT CURRENT
vs. OUTPUT VOLTAGE
1.0
VIN = 5V
0.8
0.6
0.4
MAX4793/MAX4794
350
300
MAX4789/MAX4790
250
MAX4791/MAX4792
200
150
50
0
0
-15
10
35
60
85
VIN - VOUT (V)
SWITCH TURN-ON/OFF TIMES
vs. TEMPERATURE
FLAG-BLANKING TIMEOUT
vs. TEMPERATURE
ON
100
VIN = 5V
VIN = 3.3V
1
0.1
OFF
0.01
-15
10
45
40
35
30
25
ILOAD = 10mA
-40
50
MAX4789 toc10
MAX4789 toc09
1000
10
0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.3
TEMPERATURE (°C)
FLAG-BLANKING TIME (ms)
-40
TURN-ON/OFF TIMES (µs)
400
100
0.2
0.001
MAX4789 toc08
450
OUTPUT CURRENT (mA)
1.2
NORMALIZED RON
500
MAX4789 toc07
1.4
35
60
20
85
CURRENT-LIMIT RESPONSE
-15
10
35
60
85
CURRENT-LIMIT RESPONSE
MAX4789 toc11
VIN = 3.3V
CIN = 1µF
-40
TEMPERATURE (°C)
TEMPERATURE (°C)
COUT = 1µF
MAX4789 toc12
VIN
2V/div
VIN = VON
1V/div
VON
2V/div
IOUT
100mA/div
40µs/div
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IOUT
100mA/div
VIN = VON
CIN = 1µF
COUT = 1µF
20µs/div
Maxim Integrated │ 5
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
Typical Operating Characteristics (continued)
(VIN = 3.3V, TA = +25°C, unless otherwise noted.)
CURRENT-LIMIT RESPONSE
(OUT SHORTED TO GND)
SWITCH TURN-ON TIME RESPONSE
MAX4789 toc14
MAX4789 toc13
CIN = 1µF
COUT = 1µF
VON
1V/div
VIN
2V/div
VOUT
2V/div
IOUT
10mA/div
IOUT
5A/div
40µs/div
100µs/div
FLAG-BLANKING RESPONSE
SWITCH TURN-OFF TIME RESPONSE
MAX4789 toc15
MAX4789 toc16
VON
2V/div
VIN
2V/div
VON
2V/div
FLAG
2V/div
IOUT
10mA/div
IOUT
100mA/div
200ns/div
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4ms/div
Maxim Integrated │ 6
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
Pin Configurations
TOP VIEW
TOP VIEW
IN 1
GND 2
ON 3
5 OUT
MAX4789
MAX4791
MAX4793
OUT 1
4 IN
MAX4789–
MAX4794
4 FLAG
GND 2
GND 2
3 ON
SOT23
FLAG (N.C.) 1
MAX4789–
MAX4794
ON 3
*EP
6 OUT
5 IN
4 N.C.
3mm x 3mm TDFN
SOT143
Pin Configurations continued at end of data sheet.
*EP = EXPOSED PAD. CONNECT EP TO GND.
*( ) FOR THE MAX4790, MAX4792, AND MAX4794.
Pin Description
PIN
TDFN-EP
MAX4789
MAX4791
MAX4793
TDFN-EP 5-SOT23 4-SOT143
MAX4790 MAX4789 MAX4789–
MAX4792 MAX4791 MAX4794
MAX4794 MAX4793
NAME
FUNCTION
Fault Output. This open-drain output goes low when the device stays in
forward or reverse current limit for more than the blanking time period.
FLAG is high impedance when a fault is not present or when ON is low.
Ground
1
—
4
—
FLAG
2
2
2
2
GND
3
3
3
3
ON
Active-High Switch On Input. A logic high turns the switch on.
4
1, 4
—
—
N.C.
No Connection. Not internally connected.
5
5
1
4
IN
6
6
5
1
OUT
—
—
EP
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Input. Bypass IN with a 0.1µF ceramic capacitor to ground.
Switch Output. Bypass OUT with a 0.1µF ceramic capacitor to ground.
Exposed paddle. Connect EP to a large ground plane to maximize
thermal performance. EP is not intended as an electrical connection
point. (TDFN Package only.)
Maxim Integrated │ 7
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
REVERSE CURRENT
DETECTOR
MAX4789/MAX4791/
MAX4793 ONLY
FLAG
BLANKING TIME
CIRCUITRY
N
IN
UNDERVOLTAGE
LOCKOUT
ON
N
FORWARD CURRENT
DETECTOR
OUT
+2.0V
LOGIC
AUTORETRY
MAX4789–MAX4794
GND
Figure 1. Functional Diagram
Detailed Description
The MAX4789–MAX4794 are forward/reverse current-limited switches that operate from a 2.3V to 5.5V input voltage range and guarantee a 200mA, 250mA, and 300mA
minimum current-limit threshold for different options. The
voltage drop across an internal sense resistor is compared to two reference voltages to indicate a forward or
reverse current-limit fault. When the load current exceeds
the preset current limit for greater than the fault-blanking
time, the switch opens.
The MAX4790, MAX4792, and MAX4794 have an autoretry function that turns on the switch again after an internal
retry time expires. If the faulty load condition is still present after the blanking time, the switch turns off again and
the cycle is repeated. If the faulty load condition is not
present, the switch remains on.
The MAX4789, MAX4791, and MAX4793 do not have the
autoretry option and the switch remains in latch-off mode
until the ON pin or the input power is cycled from high to
low and then high again.
The undervoltage lockout (UVLO) circuit prevents erroneous switch operation when the input voltage goes too low
during startup conditions.
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Reverse Current Protection
The MAX4789–MAX4794 limit the reverse current (VOUT
to VIN) from exceeding the maximum IREV value. The
switch is shut off and FLAG is asserted (MAX4789/
MAX4791/MAX4793) if the reverse current-limit condition
persists for more than the blanking time. This feature
prevents excessive reverse currents from flowing through
the device.
Switch-On/Off Control
Toggle ON high to enable the current-limited switches.
The switches are continuously on, only if VIN exceeds
the UVLO threshold (typically 2V) and there is no fault.
When a forward/reverse current fault is present or the die
exceeds the thermal-shutdown temperature of +150°C,
OUT is internally disconnected from IN and the supply
current decreases to 8µA (latch off). The switch is now
operating in one of its off states. The switch-off state also
occurs when driving ON low, thus reducing the supply
current (shutdown) to 0.01µA. Table 1 illustrates the
ON/OFF state of the MAX4789–MAX4794 current-limit
switches.
FLAG Indicator
The MAX4789, MAX4791, and MAX4793 feature a
latched fault output, FLAG. Whenever a fault is activated, it latches FLAG output low and also turns the switch
Maxim Integrated │ 8
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
Table 1. MAX4789–MAX4794 Switch Truth Table
ON
FAULT
SWITCH ON/OFF
SUPPLY CURRENT MODE
Low
X
OFF
Shutdown
High
Undervoltage Lockout
OFF
Shutdown
High
Thermal
OFF immediately (tBLANK period does not apply)
Latch off
OFF after tBLANK period has elapsed
High
Current Limit
off. FLAG is an open-drain output transistor and requires
an external pullup resistor from FLAG to IN. During
shutdown (ON is low), the pulldown on FLAG output is
released in order to limit power dissipation. FLAG goes
low when any of the following conditions occur:
●● The die temperature exceeds the thermal-shutdown
temperature limit of +150°C.
●● The device is in current limit for more than the
fault-blanking period.
●● VIN is below UVLO threshold.
Autoretry (MAX4790/MAX4792/MAX4794)
When the forward or reverse current-limit threshold is
exceeded, tBLANK timer begins counting (Figure 2). The
timer resets if the overcurrent condition disappears before
tBLANK has elapsed. A retry time delay, tRETRY, is started
immediately after tBLANK has elapsed and during that
time, the switch is latched off. At the end of tRETRY, the
switch is turned on again. If the fault still exists, the cycle
is repeated. If the fault has been removed, the switch
stays on.
The autoretry feature saves system power in the case
of an overcurrent or short-circuit condition. During
tBLANK, when the switch is on, the supply current is
at the current limit. During tRETRY, when the switch
is off, the current through the switch is zero. Instead
of observing the full load current, the switch sees the
equivalent load current times duty cycle or ISUPPLY
= ILOAD 5 tBLANK/(tBLANK + tRETRY). With a typical
tBLANK = 37ms and typical tRETRY = 259ms, the duty
cycle is 12%, which results in an 88% power savings
over the switch being on the entire time. The duty cycle
is consistent across the process and devices.
Latch Off (MAX4789/MAX4791/MAX4793)
When the forward or reverse current-limit threshold is
exceeded, tBLANK timer begins counting. The timer
resets if the overcurrent condition disappears before
tBLANK has elapsed. The switch is shut off if the overcurrent condition continues up to the end of the blank-
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Latch off
ON during tBLANK period, OFF during tRETRY period for the
MAX4790, MAX4792, and MAX4794; cycle repeats until fault
is removed
tBLANK
tRETRY
See the Autoretry section
tBLANK
tBLANK
CURRENT
LIMIT
LOAD
CURRENT
SHORT
CONDITION
REMOVED
ON
SWITCH
STATUS
OFF
Figure 2. MAX4790/MAX4792/MAX4794 Autoretry Fault
Blanking Diagram
ing time. Reset the switch by either toggling ON (Figure 3a)
or cycling the input voltage below UVLO, typically 2V
(Figure 3b).
Fault Blanking
The MAX4789–MAX4794 feature 14ms (min) fault blanking. Fault blanking allows current-limit faults, including momentary short-circuit faults that occur when hot
swapping a capacitive load, and also ensures that no
fault is issued during power-up. When a load transient
causes the device to enter current limit, an internal
counter starts. If the load-transient fault persists beyond
the fault-blanking timeout, the MAX4789/MAX4791/
MAX4793 FLAG asserts low. Load-transient faults less
than tBLANK do not cause a FLAG output assertion. Only
current-limit faults are blanked.
A thermal fault and input voltage drops below the UVLO
threshold cause FLAG to assert immediately and do not
wait for the blanking time.
Thermal Shutdown
The MAX4789–MAX4794 have a thermal shutdown feature to protect the devices from overheating. The switch
turns off and FLAG goes low immediately (no fault blanking) when the junction temperature exceeds +150°C. The
switch turns back on when the device temperature drops
approximately 15°C.
Maxim Integrated │ 9
MAX4789–MAX4794
tBLANK
200mA/250mA/300mA Current-Limit Switches
the MAX4789–MAX4794 from tripping erroneously. If the
load capacitance is too large, then current may not have
enough time to charge the capacitance and the device
assumes that there is a faulty load condition. The maximum capacitive load value that can be driven from OUT
is obtained by the following formula:
tBLANK
LOAD
CURRENT
ON
SWITCH
STATUS
OFF
C MAX <
IFWD_MIN × t BLANK _MIN
ON PIN
VOLTAGE
VIN
Layout and Thermal Dissipation
To optimize the switch response time to output short-circuit conditions, it is very important to keep all traces as
short as possible to reduce the effect of undesirable
parasitic inductance. Place input and output capacitors
as close as possible to the device (no more than 5mm).
IN and OUT pins must be connected with short traces to
the power bus.
FLAG PIN
STATUS
(a)
tBLANK
tBLANK
LOAD
CURRENT
During normal operation, the power dissipation is small
and the package temperature change is minimal. If the
output is continuously shorted to ground at the maximum
supply voltage, the operation of the switches with the
autoretry option does not cause problems because the
total power dissipated during the short is scaled by the
duty cycle:
ON
SWITCH
STATUS
OFF
IN PIN
VOLTAGE
UVLO
FLAG PIN
STATUS
(b)
=
PMAX
Figure 3. MAX4789/MAX4791/MAX4793 Latch-Off Fault
Blanking
Applications Information
Input Capacitor
To limit the input voltage drop during momentary output
short-circuit conditions, connect a capacitor from IN to
GND. A 0.1µF ceramic capacitor is adequate for most
applications; however, higher capacitor values further
reduce the voltage drop at the input and are recommended for lower voltage applications.
Output Capacitance
Connect a 0.1µF capacitor from OUT to GND. This
capacitor helps prevent inductive parasitics from
pulling OUT negative during turn-off, thus preventing
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VIN_MAX × I OUT_MAX × t BLANK
= 302mW
t RETRY + t BLANK
where VIN = 5.5V, IOUT = 450mA, tBLANK = 14ms, and
tRETRY = 98ms.
Attention must be given to the MAX4789, MAX4791, and
MAX4793 where the latch-off condition must be manually
reset by toggling ON from high to low. If the latch-off time
duration is not sufficiently high, it is possible for the device
to reach the thermal-shutdown threshold and never be
able to turn the device on until it cools down.
Chip Information
PROCESS: BiCMOS
Maxim Integrated │ 10
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
Selector Guide
PART
Ordering Information
PINCURRENT
FLAG
PACKAGE LIMIT (mA) FUNCTION
AUTORETRY
MAX4789
4 SOT143
200
No
No
MAX4789
5 SOT23
200
Yes
No
MAX4789
6 TDFN
200
Yes
No
MAX4790
4 SOT143
200
No
Yes
MAX4790
6 TDFN
200
No
Yes
MAX4790
5 SOT23
200
No
Yes
MAX4791
4 SOT143
250
No
No
MAX4791
5 SOT23
250
Yes
No
MAX4791
6 TDFN
250
Yes
No
MAX4792
4 SOT143
250
No
Yes
MAX4792
6 TDFN
250
No
Yes
MAX4793
4 SOT143
300
No
No
MAX4793
5 SOT23
300
Yes
No
MAX4793
6 TDFN
300
Yes
No
MAX4794
4 SOT143
300
No
Yes
MAX4794
6 TDFN
300
No
Yes
MAX4789EUS+T
PINPACKAGE
-40°C to +85°C 4 SOT143
TOP
MARK
KAFE
MAX4789EUK+T
-40°C to +85°C 5 SOT23
AEAC
MAX4789ETT+
-40°C to +85°C 6 TDFN-EP*
ABO
MAX4790EUS+T
-40°C to +85°C 4 SOT143
KAFF
MAX4790ETT+
-40°C to +85°C 6 TDFN-EP
ABP
MAX4791EUS+T
-40°C to +85°C 4 SOT143
KAFG
MAX4791EUK+T
-40°C to +85°C 5 SOT23
AEAE
PART
TEMP RANGE
MAX4791EUK/V+T† -40°C to +85°C 5 SOT23-5
AFGJ
MAX4791ETT+
-40°C to +85°C 6 TDFN-EP*
ABQ
MAX4792EUS+T
-40°C to +85°C 4 SOT143
KAFH
MAX4792ETT+
-40°C to +85°C 6 TDFN-EP*
MAX4793EUS+T
-40°C to +85°C 4 SOT143
KAFI
MAX4793EUK+T
-40°C to +85°C 5 SOT23
AEAG
MAX4793ETT+
-40°C to +85°C 6 TDFN-EP*
ABS
MAX4794EUS+T
-40°C to +85°C 4 SOT143
KAFJ
MAX4794ETT+
-40°C to +85°C 6 TDFN-EP*
ABT
ABR
*EP = Exposed paddle.
/V denotes an automotive qualified part.
† denotes a part Not Recommended for New Designs
+Denotes a lead-free/RoHS-compliant package.
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Maxim Integrated │ 11
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
CHANGED
2
2/05
Changed package description
3
10/08
Changed Ordering Information and Package Information.
4
5/19
Updated MAX4791EUK/V+T as Not Recommended for New Designs
DESCRIPTION
—
1, 8–11
9
For pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https://www.maximintegrated.com/en/storefront/storefront.html.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
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